Analog Devices Inc./Maxim Integrated MAX17630CATE+

Overview

MAX17630CATE+ from Maxim Integrated is a high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs, operating from 4.5V to 36V input and delivering up to 1A output current. It features adjustable output voltage (0.9V to 90% of VIN), peak-current-mode control, and built-in compensation eliminating external RC networks. Used in industrial point-of-load regulation where compact size, wide input range, and light-load efficiency are critical.

For engineers reviewing the MAX17630CATE+ datasheet, MAX17630CATE+ pinout, MAX17630CATE+ application, or MAX17630CATE+ equivalent, key selection criteria include its 16-pin TQFN package, 400kHz–2.2MHz programmable switching frequency, ±1.2% feedback regulation accuracy over –40°C to +125°C, hiccup-mode overload protection, and EXTVCC auxiliary supply for improved efficiency.

Technical Context

The MAX17630CATE+ implements peak-current-mode control with selectable operation modes-PWM (forced continuous), PFM (pulse-frequency modulation), or DCM (discontinuous conduction)-enabling >95% peak efficiency and enhanced light-load performance. Its internal compensation is validated across the full 0.9V–VIN×0.9 output range, removing need for external loop components.

It integrates high-side (150–300mΩ) and low-side (100–200mΩ) nMOSFETs, supports external clock synchronization via MODE/SYNC pin, and includes monotonic soft-start, prebias startup, and built-in RESET monitoring with 90.5–94.6% FB undervoltage assertion threshold.

Key Specifications

Pinout & Package

MAX17630CATE+ is housed in a 16-pin, 3mm × 3mm TQFN package with exposed thermal pad (EP). The package supports high power density and efficient heat dissipation when EP is soldered to a large SGND plane with ≥4 thermal vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down regulator applications.

Compared with LM5164QPWPRQ1 and TPS54202DRCT, the MAX17630CATE+ provides tighter output regulation (±1.2% vs. ±1.5–2%), integrated compensation, and multi-mode efficiency optimization - reducing design cycle time and component count in industrial point-of-load applications.

Availability

MAX17630CATE+ is available at Aetrix Electronics and suitable for industrial control power supplies, distributed supply regulation, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX17630CATE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.

The MAX17630 series targets industrial point-of-load conversion, emphasizing wide-input operation, robust protection, and minimal external components - enabling compact, reliable power solutions for harsh environments.

FAQ

What is the minimum output voltage supported by the MAX17630CATE+?

The MAX17630CATE+ supports an adjustable output voltage down to 0.9V, set by an external resistor divider connected to the FB pin. This 0.9V reference is guaranteed over the full –40°C to +125°C temperature range and enables powering modern low-voltage logic and cores. The upper limit is 90% of VIN, allowing scalable regulation across varying input conditions.

Does the MAX17630CATE+ require external compensation components?

No, the MAX17630CATE+ includes fully integrated compensation circuitry validated across its entire 0.9V to 90% of VIN output range. This eliminates the need for external Type-II or Type-III compensation networks, reducing BOM count, PCB area, and design validation effort compared to controllers requiring external compensation.

How does the MODE/SYNC pin affect efficiency in the MAX17630CATE+?

The MODE/SYNC pin configures the MAX17630CATE+ into PWM (constant frequency), PFM (pulse-skipping), or DCM (discontinuous conduction) mode. In PFM/DCM, quiescent current drops to 50μA or 1.2mA respectively, significantly improving light-load efficiency - critical for battery-backed or always-on industrial sensors where 10–100mA loads dominate operational time.

Can the MAX17630CATE+ be synchronized to an external clock?

Yes, the MAX17630CATE+ supports external clock synchronization via the MODE/SYNC pin. When driven with a square wave at 1.1× to 1.4× the internal switching frequency, the device locks to the external clock - enabling deterministic EMI reduction and phase alignment across multiple converters in dense power systems like modular PLCs or multi-rail SBCs.

What thermal performance can be expected from the MAX17630CATE+ in a standard 4-layer PCB layout?

In a standard 4-layer PCB with the exposed pad (EP) soldered to a solid SGND plane using ≥4 thermal vias, the MAX17630CATE+ achieves a junction-to-ambient thermal resistance (θJA) of 38°C/W. At 1A load and 24V input, this enables reliable operation up to +125°C ambient without forced airflow - verified per Maxim's evaluation kit layout guidelines.